Electric alarm



W. F. 827 W- H. KEEP; hee ts-sheet 1.

ELEGTRIG ALARM APPLIED T0 COTS, &c.

Patented June 3, 1884.

(No Model.)

4 Sheets-Sheet 2. W. P. & W. H. -K.EEP.

ELECTRIC ALARM APPLIED TO COTS, 8E0- Paltented June 3, 1884.

(No Model.) 4 Sheets-Sheet 3.

} W. P. & W. H. KEEP. ELEGTRIG'ALARM APPLIED T0 001's, &c.

No. 299,649. Patented June "3, 1884.

\ x i rill? (No Model.) 4 She etsSheet 4.

W. F. & W. H. KEEP.

ELEGTRIG ALARM APPLIED T0 COTS, 8w.

No.29'9, 649 PatentedJurie 3,1884.

I I l l l I I I I l 1)) )Yi/neaeo: I W WW nirrnn rns arnn'r Enrica.

WILLIAM F. xEEr AND WALTER H KEEP, on il HAZELLVILLE ROAD, noEnsEr LANE, coun'rr or Mmn EsEx, ENGLAND.

ELECTREC ataawi'aesmso TO core, at.

S?ECIPICATI ON forming part of Iietters Patent No. 299,649, dated June 3, 1884-.

Application filed February 9, 1884. (N0 model.) Patented in England September 5, 1883, No. 4,265.

To all whom it may concern:

Be it known that we, WILLIAM FREDEEIcK KEEP and WALTER HUGH KEEP, citizens of Great Britain, both residing at 11 Hazellville Bead, Hornsey Lane, in the county of Middle sex, England, have invented new and useful improvements in electric alarms to be applied to childrens cots and bedsteads for preventing accidents, of which the following is a spec fication.

Our invention has for its object the prevention of accidents owing to the tendency in infants and children to leave their cots or bedsteads; and it consists in the combinatiomwith the up er part of the cot or bedstead, of a hingedor movable frame with or without a light cover or' hood, such frame resting on a spring-block, which when depressed by the weight of the child attempting to climb over the frame, brings in contact two pieces of brass or other suitable metal, and forms an electric circuit which causes the sounding of a hell or alarm, placed in any convenient situation.

The apparatus for forming the electric circuit may be of any known or suitable kind,

and may be contained in a box fixed to the upper part of the cot or bedstead at the end or side, and preferably opposite to the hinges of the said frame.

Figure 1 is an endview of a cot or bedstead fitted with our improved apparatus. Fig. 2

is a side View, and Fig. 3 is a plan or'horizontal view, of the same. Fig. 4 is an enlarged view of part ofa bedstead, as shown in Fig. 1,

but with the front of the box containing the apparatus for making and breaking the electric circuit removed. Fig. 5 is a plan or horizontal view of Fig.4. Fig. 6 is a similar view to Fig. 4., but with. the box entire, and

showing the said apparatus by means of dotted lines. Fig. 7 is an elevation of the blocks detached, showing another form of spring between the blocks. Fig.8 isaplan of thelower or stationary block. Figs. 9,10, and 11 show diflerent views of a bedstead fitted with the said apparatus, in combination with a netted hood or cover. r. g

In these several figures the same lettersof reference designate corresponding parts.

In Figs. 1, 2, and 3 a hinged or movable frame is shown at A without a hood or cover,

and in Figs. 9, 10, and 11 it is shown with a.

hood or cover. This frame may be either hinged, as shown atID D, or it may be constructed without a hinge, so as to be readily capable of vertical movement to the extent of an inch 'or thereabout, by means of downward pressure. In the latter case an apparatus for making and breaking the electric circuit would be required at two opposite sides or ends of the cot or bedstead, and also one vertical guide for the frame at or near each corner of the cot or bedstead. One side or end of this frame rests on a movable springblock, B, which, when depressed by the weight of the child applied to the frame A, brings in contact the two pieces of brass or other suitable metal, G, asshown by dotted lines in Fig. 6, and forms an electric circuit by. means of the wires a a from the battery, and which causes the sounding of such bell or alarm, fitted in any convenient situation. The said apparatus for making and breaking the electric circuit is or may be contained in a box, 0, fixed to the part of the cot or bedstead at the end or side-preferably opposite to the hinges D of the said frame-and consists of one fixed block, E,to which is hinged at one end the said movable block B, and a suitable spring, F, being fixed between the blocks B and E to keep them apart, as required. There is; also inserted in or connected to each block a piece of brass or other suitable metal, G, Fig. 7, slightly projecting therefrom, and which pieces are kept apart by the spring F when at rest, but are brought in contact on its compression. The wires a and a from the bell and battery are connected to metal pins -b b, which are insulated, except at their points of contact, and which are inserted in sockets formed in the contact-pieces G, thereby completing the electric circuit on the compression of the spring F and the contact of the pieces G.

If the hinges are made at one end of the cot or'bedstead, we arrange two guides or sockets, H H, which are fixed near the two corners at the sides of the bedstead, opposite the hinges D D, and pins I are so arranged as to fix the frame A either so as not to act at all upon the block 13 or to prevent the said frame from rising too far. f

The hood or cover referred to above may be and a movable frame. hinged to the upper of any convenient form, and the netting of part thereof at one side or end, of the circuitwhich it is made may be of wire, cord,si1k, or closing device-of an electric alarm interposed any other suitable material. between the cot or bedstead and said mova- 5 What we claim as our invention, and desire ble frame on the side or end opposite to that e to secure by Letters Patent, isat which they are hinged together, substam f1. The combination, with a cot or bedstead, tially asherein described. o a movable frame attached to the upper part I thereof, and an apparatus, substantially as 1o herein described, for making and breaking the electric circuit of an alarm or bell, sub- Witnesses: stantially as herein set fort WILLIAM SPENOE,

2. The combination, with a bedstead or cot ARTHUR VENN. 

